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Haystack

haystack.deepset.ai AI Agent Frameworks Online toolOpen source

Haystack provides modular building blocks for agentic, context engineered AI systems.

Visit Haystack 24 alternatives
haystack.deepset.ai
Haystack homepage screenshot

About Haystack

Haystack is an open-source AI orchestration framework for building production-ready agents and applications powered by large language models. It provides modular, customizable building blocks for context-engineered systems.

You can use it to orchestrate retrieval, reasoning, memory, and tool use, build RAG pipelines, design agents with branching and looping flows, work with text, image and audio, and create conversational bots and content generation workflows. It connects to models and data stores such as OpenAI, Anthropic, Mistral, Hugging Face, Weaviate, Pinecone, and Elasticsearch. Pipelines are serializable, cloud-agnostic, and Kubernetes-ready, with logging and monitoring support.

It suits developers and teams moving from prototype to production who want inspectable components, no vendor lock-in, and deployment across cloud or on-prem environments. Community support is available via Discord, with enterprise support and platform options also listed.

Key features

  • Modular blocks for retrieval, reasoning, memory and tool use
  • Build RAG pipelines with hybrid retrieval and self-correction loops
  • Design agents with standardized tool calling and branching flows
  • Connect to OpenAI, Anthropic, Mistral, Hugging Face and vector stores
  • Serializable, cloud-agnostic pipelines ready for Kubernetes deployment
  • Support for text, image processing and audio transcription tasks
Best for: Developers and teams building production-ready AI agents and RAG systems with open, modular components.
Good for
  • Open-source framework with modular, inspectable components
  • Works with many models and data stores without vendor lock-in
  • Same building blocks for prototype and production deployment
  • Pipelines support logging, monitoring and Kubernetes deployment
Watch out for
  • Requires Python and coding to install and build pipelines

Haystack at a glance

Type
Online tool
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026
open sourceframeworksorchestration

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Haystack FAQ

What is Haystack used for?
Haystack is an open-source framework for building production-ready, LLM-powered agents and applications, including RAG pipelines, conversational bots, and multimodal tasks.
Is Haystack open source?
Yes, Haystack is open source and installs with pip install haystack-ai, with source code on GitHub and community support on Discord.
Which models and tools does Haystack integrate with?
It connects to OpenAI, Anthropic, Mistral, Hugging Face, Weaviate, Pinecone, Elasticsearch, and more, with no vendor lock-in.
Does Haystack support production deployment?
Yes, its pipelines are serializable, cloud-agnostic, and Kubernetes-ready, with logging, monitoring, and deployment guides.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 6, 2026 · How we rank